How to Write a Professional Quotation in Singapore (Free Template)

To write a professional quotation in Singapore, set a fixed price for a clearly defined scope, state a validity period, and include your business details, itemised costs, and payment terms. A quotation wins or loses the job before any work happens. It is the document that sets your price, defines what is included, and shapes what the client expects. A vague quote invites scope creep and awkward conversations later; a clear one protects both sides and makes converting to a paid project simple. Here is how to write a professional quotation in Singapore, and what to include.

Quotation, estimate, or invoice?

These three get confused, so it helps to be precise:

• A quotation is a fixed-price offer for a clearly defined scope of work. Once accepted, the price is set.
• An estimate is an approximate figure that can change as the work becomes clearer. It signals a likely cost, not a firm one.
• An invoice is the bill you issue after the work is agreed and done. The invoice vs receipt guide covers that side.

If you are committing to a price, call it a quotation and treat it like one.

Is a quotation binding?

This is the part people overlook. Once a client accepts your quotation, it can form a binding agreement on the terms you stated, the scope, the price, and any conditions. That is exactly why the details matter: a clear, well-bounded quotation protects you, while a loose one can lock you into delivering more than you priced for. Set it out carefully and it works in your favour.

What Should a Singapore Quotation Include?

A professional quotation carries:

• Your name or business name, contact details, and UEN if you have one.
• The client's name and details.
• A quotation number and the date issued.
• A validity period, for example "valid for 30 days."
• An itemised scope of work with prices for each part.
• Whether the prices include or exclude GST (see below).
• Payment terms, including any deposit required on acceptance.
• Any exclusions, assumptions, or limits, such as the number of revisions included.

Itemising the scope is what prevents disputes later, because both sides can see exactly what the price covers.

Set a validity period

Always state how long the quote is good for. Costs change, your availability changes, and an open-ended quote can come back to you months later at a price that no longer works. A line like "This quotation is valid for 30 days from the date above" is standard and protects you without seeming unreasonable.

GST on quotations

If you are GST-registered, state clearly whether your quoted prices include or exclude the 9% GST, so there are no surprises when the invoice arrives. "All prices exclude 9% GST" or "Total includes 9% GST" removes any ambiguity. If you are not GST-registered, which most freelancers and small businesses are not, your quote simply has no GST on it. The GST invoice guide explains when GST applies.

Define scope and exclusions

Scope creep, the slow expansion of a job beyond what was agreed, is the most common quotation problem. Head it off by writing down not just what is included but what is not. If a website quote covers three pages, say so. If it includes two rounds of revisions, say so. When extra work is requested later, you can point to the quotation and raise a separate quote for the additional scope rather than absorbing it.

Spell out payment terms

State what happens on acceptance. For larger jobs it is normal to ask for a deposit upfront, with the balance due on completion or in milestones. Putting this in the quotation means the client agrees to it when they accept, rather than negotiating it once the work is underway.

Turn an accepted quote into an invoice

Once the client says yes, the quotation becomes the basis for your invoice. Keeping the same scope, numbering, and amounts makes the handover clean and your records consistent. The quote generator on this site can convert an accepted quotation straight into an invoice, so you are not retyping anything.

Following up on a sent quote

If you have not heard back within a few days, a short, friendly note is appropriate: confirm the quote is still valid, offer to answer any questions, and gently remind them of the validity period. A quote that lapses quietly is a job lost for no reason.

Create your quotation for free

The free quotation tool on this site builds a professional, itemised quote in minutes, with your details and UEN, clear validity and terms, an optional GST line if you are registered, and one-click conversion to an invoice once it is accepted. No sign-up needed.